Sand pump and bailer



No Model.)

F. JACKSON. SAND PUMP AND BAILBR.

No. 595,306, l Patented Deo. 14,1897.

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FREDERICK JACKSON, OF KARNSv CITY, PENNSYLVANIA.

SAND PUNIP AND BAILER.

SPECIFICATION forming part of LettersPatent No. 595,306, dated December 14, 1897'. Application filed August 28, 1897. Serial No.7649,883. (No model.)

,To @ZZ whom, it may concern:

Be it known that I, FREDERICK J AcKsoN, a citizen of the United States, residing at Karns City,in the county of B utler and State of Pen nsylvania, have invented certain new and useful Improvements in Sand Pumps and Bailers; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to improvements in' sand-pumps, and is intended principally for use in oil-wells for removing the sand, mud, and the like from the saine.

The invention consists of certain novel constructions, combinations, and arrangements v of parts, which will be more particularly set forth and claimed.

In the accompanying drawings, forming part of this specification, Figure 1 represents a side elevation of the devices embodying my invention, the interior parts being shown in their depressed position by dotted lines. Fig. 2 represents a central vertical section through the same, the piston being in its elevated position. Fig. 3 represents a detail central vertical section through the lower portion of the pipe, showing the application of the valve-removing tool. Fig. 4 represents an enlarged detail perspective view of a modified form of said tool applied in position.

1 in the drawings represents the tube or cylinder of my improved pump, 2 the removable valve, and 3 the piston. The cylinder or pipe 1 is formed near its lower end with two apertures 4 4, arranged on diametrically opposite sides and adapted to receive two locking-plungers 5 5, mounted upon the respective lower ends of flat springs 6, which latter are secured at their upper ends to the side of the tube l. The tension of said springs 6 normally holds the locking plungers or studs 5 in their respective recesses 4, but permits of the same being withdrawn at will to release the valve 2, as hereinafter described. The edges of said springs 6 are preferably beveled,so that a suitable unlocking-tool may be forced under the same to withdraw the studs 5 from the recesses 4. The said valve 2 comprises a hollow valve-casing 7, adapted to lit within the lower end of the tube 1 and having an annu- `with its load out of the well.

`said extension.

lar external shoulder S, upon which the lower end of said tube rests. The lower edge of said casing 7 is preferably scalloped, as shown at 9, to permit the ready entrance of the sand, water, and other substances into the said casing when the saine is resting upon the bottom of the well. The upper portion of said casing 7 is formed upon diametrically opposite sides with apertures 10, into which the inner ends of the studs 5 spring, so as to hold said casing irmlyin position. An inlet-aperture 11 is formed in the top of said casing and is covered by an upwardly-opening flap-valve 12, whereby the upward passage of water through said casing is permitted, but any reverse movement of the water prevented. The piston 3 is adapted to be operated in the tube 1 to draw the water, sand, and other substances into the same and then lift said tube This piston comprises a head 13, having upper and lower screw-threaded extensions 14 and 15, respectively. A packing or elastic washer 1G is mounted on said extension 15 and is adapted fto be held securely in place by a screwthreaded locking-nut 17, also applied upon A vertical passage 18 is formed through the head 13 and extensions y14 and 15 and terminates at its upper end in ,a valve-seat 1S, upon which rests a spherical valve 19, so as to norm ally close the upper end of said passage against any downward egress of water. The said valve 1D is confined in the proper position upon its valve-seat by a valve-cage 20, having' a screw-threaded sleeve 21, which screws upon the upper extension 14. Said cage 2O is suitably connected to the piston rod or stem 22, which passes up through the tube 1 and is connected to the operating devices. Said valve-cage 2O is formed with a nut or washer 23, having a central stud or extension 24, upon which rests the lowerend of the coiled spring 25, the latter surrounding the rod 22. The upper end of the tube 1 is closed by a socketed head 2G, which latter is secured in position Iby suitable rivets or bolts 27.

It will be observed from the foregoing description that as the piston 3 approaches the upper end of the tube l the upper end of the coiled spring 25 engages the underside of the head 26, and thus prevents any further up- IOO ward movement of said piston independently of the tube l. Said spring 25 thereby absorbs all shock or sudden concussion, which would be thrown ordinarily upon the devices by the striking of the upper portion of the piston against the under side of the head 26. Openings 28 are formed in the tube l, so that as said tube is lowered into the well the liquid passing into the same will not be forced up through the valve 19, but will pass out of the said openings. After said tube l has been filled and drawn up out of the well the springs 6 are operated, as described, and the valve 2 permitted to drop from the lower end of the tube, thus allowing the escape of the contents of said tube. The disengagement of said valve from the lower end of the tube is pref- Yerably accomplished by a tool such as shown in Fig. 4 and which comprises a hook portion 3l, adapted to pass partly about said tube, and curved wedge-shaped arms 32, adapted to extend on either side of the tube and between it and said springs 6. A suitable operating-handle 33 is provided upon the devices, whereby it may be operated to cause the said Wedge-shaped portions 32 to pass under the springs 6 by engaging the beveled edges of the same.

It is sometimes desirable, because of the character of the soil through which the well is driven, to locate the springs for operating the locking-studs upon the interior of the valve itself and have them spring out through the apertures of the valve into the apertures of the tube. The operation in this application of my invention is practically the same as before, with the exception that the valve is disengaged from the tube by forcing the outer ends of the spring-pressed studs inward. This is accomplished, as shown in Fig. 3, by a scissors-shaped device 34, having disengagingstuds 35 mounted at its opposite ends and adapted to engage said outer ends of the studs mounted upon the springs.

By the employment of my invention the valve may be instantly released from the lower end of the lifting-tube without turning or without the employment of any force other than that necessary to operate the disengaging-tool. The shock incidental to the termination of the upward movement of the piston will be absorbed because of the peculiar construction of the spring 25, which is interposed between the upper end of the piston and the under side of the head 26.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is Y l. In a pump, the combination with a suitable tube, of a valve removably mounted at the lower end of the same and provided with a plurality of apertures, spring-pressed studs mounted on the lower end of said tube and adapted to enter said apertures to hold the valve in position, and a piston mounted in said tube, substantially as described.

2. In a pump, the combination with a suitable tube, of springs located at the lower` end of said tube and carrying plungers or studs which normally project through the wall of said tube, a valve comprising a hollow casin g formed with a plurality of openings adapted to be engaged by said studs,and avalve proper mounted on said casing, substantially as described.

3. In a pump, the combination with a suitable tube, of springs located at the lower end of the same and provided with studs or plungers which project through the walls of said tube, a valve-casing provided with apertures adapted to be engaged by said studs, a valve mounted on said casing, a piston mounted in said tube, a piston-rod connected to said piston, a head at the upper end of said tube, and a coiled spring interposed between said head and said piston, substantially as described.

In testimony whereof I have signed this specification in the presence of two subscribing witnesses.

FREDERICK JACKSON. 

